Squeeze-off Tester & Crushing Machine (ISO 13955)

The Polyethylene Gas Pipe Squeeze-off and Crushing Tester is a specialized hydraulic machine designed to assess the structural integrity of PE pipes when subjected to compressive shut-off forces. Featuring a robust hydraulic jack with a pressure locking system, chrome-plated guide rods, and a 4.3-inch touch screen, this device ensures precise control over displacement speed and force, fully complying with ISO 13955 and EN 12106 standards.

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Description

Squeeze-off Tester: Ensuring Safety in Gas Pipe Maintenance

In the gas distribution industry, maintenance teams often perform a “squeeze-off” operation to stop the flow of gas in a section of polyethylene (PE) pipe. This involves clamping the pipe flat until the flow stops. The Squeeze-off Tester (Crushing and Flattening Machine) is designed to verify that the pipe can withstand this extreme deformation without cracking, splitting, or suffering long-term structural damage.

Hydraulic Precision and Stability

Unlike simple manual clamps, this laboratory device provides controlled, measurable deformation:

Hydraulic Locking System: A key feature that stabilizes the force during the test. This allows the machine to hold the pipe in the “squeezed” position for long durations to check for stress cracking (Slow Crack Growth).
Chrome-Plated Guides: The moving plate glides on precision-machined rods, ensuring the compression is perfectly vertical and the pipe is not subjected to uneven shear forces.
Displacement Control: With an accuracy of 0.1 mm, operators can stop the compression exactly at the standard-defined limit stops.

User-Friendly Digital Interface

The machine is equipped with a 4.3-inch Color Touch Screen that allows operators to:

Set the compression speed.
Monitor real-time force and displacement data.
Lock the hydraulic pressure for extended testing cycles.

Complementary Mechanical Testing

The squeeze-off test focuses on the pipe’s ability to deform and recover. To fully characterize the PE material’s strength and elasticity before and after such events, we recommend using our Universal Testing Machine (UTM).

International Standards Compliance

This equipment is engineered to meet the strict safety requirements of gas pipe standards:

ISO 13955: Plastics pipes and fittings — Crushing decohesion test for polyethylene (PE) electrofusion assemblies.
EN 12106: Plastics piping systems — Polyethylene (PE) pipes — Test method for the resistance to internal pressure after squeeze-off.

Consultation and Purchase

To ensure your gas pipes meet the highest safety standards, please click the “Contact for Purchase” button to reach our technical team via WhatsApp. You can also visit our Contact Us page for further inquiries.